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Finding the Fourth Proportional to 11,191.47, 16,787.22 and 5,330.31

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Solution

The fourth proportional to 11,191.47, 16,787.22 and 5,330.31 is: 7,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.47 : 16,787.22 = 5,330.31 : x
  2. Step 2: Convert to fraction form
    11,191.47/16,787.22 = 5,330.31/x
  3. Step 3: Cross multiply
    11,191.47x = 16,787.22 × 5,330.31
  4. Step 4: Simplify right side
    11,191.47x = 89,481,086.64
  5. Step 5: Solve for x
    x = 89,481,086.64/11,191.47
  6. Step 6: Final answer
    x = 7,995.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.